I witnessed a white/silver, disk shaped object, seen briefly. I was at the corner of Callaghan and Evers heading towards Bandera road, when the object caught my eye. It was heading south towards Lackland A.F.B, at what appeared to be a slow rate of speed and positioned in the air at about 140 degrees relative to my position when suddenly I lost sight of it, but seconds later a high altitude aircraft traveling at a high rate of speed approached the area where I had last seen the object.

The intercepting craft appeared to be coming from the direction of Lackland A.F.B.

Minutes later as I was arriving at my destination I witnessed the same fast traveling aircraft returning back in the direction of the base. Visual contact with the unknown object lasted mere seconds but the whole event took place over a period of 8 minutes or so.